introducing the all new 60-horsepower ranger xp 900, a whole new class of hardest-working, smoothest-riding. >>shepard: california is the latest state to clear the way for driverless cars, creating regulations for testing and operating self driving vehicles. nevada and florida have passed similar laws. google executives say these vehicles will be a relates for ordinary people in five years. we have a features editor for an automotive website. just get out of the way, how will the cars know the left lane is the slow lane on the long island expressway the how do they work with regular people? >>guest: well, the idea is if you don't let regular people drive things go more smoothly. >>shepard: that sounds true, especially with teenagers. how do you stop that? it will not happen overnight. >>guest: well, it will not happen overnight. that mix of cars and drive driven cars present as rough transition from now until the future. >>shepard: how does that car know the patterns of other cars? there are probably a lot computers in there. >>guest: tons of computers. sensors all over. recognition of wher